+++ /dev/null
-/*M///////////////////////////////////////////////////////////////////////////////////////
-//
-// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
-//
-// By downloading, copying, installing or using the software you agree to this license.
-// If you do not agree to this license, do not download, install,
-// copy or use the software.
-//
-//
-// Intel License Agreement
-// For Open Source Computer Vision Library
-//
-// Copyright (C) 2000, Intel Corporation, all rights reserved.
-// Third party copyrights are property of their respective owners.
-//
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
-//
-// * Redistribution's of source code must retain the above copyright notice,
-// this list of conditions and the following disclaimer.
-//
-// * Redistribution's in binary form must reproduce the above copyright notice,
-// this list of conditions and the following disclaimer in the documentation
-// and/or other materials provided with the distribution.
-//
-// * The name of Intel Corporation may not be used to endorse or promote products
-// derived from this software without specific prior written permission.
-//
-// This software is provided by the copyright holders and contributors "as is" and
-// any express or implied warranties, including, but not limited to, the implied
-// warranties of merchantability and fitness for a particular purpose are disclaimed.
-// In no event shall the Intel Corporation or contributors be liable for any direct,
-// indirect, incidental, special, exemplary, or consequential damages
-// (including, but not limited to, procurement of substitute goods or services;
-// loss of use, data, or profits; or business interruption) however caused
-// and on any theory of liability, whether in contract, strict liability,
-// or tort (including negligence or otherwise) arising in any way out of
-// the use of this software, even if advised of the possibility of such damage.
-//
-//M*/
-
-#include "_cv.h"
-
-static void
-icvAdaptiveThreshold_MeanC( const CvMat* src, CvMat* dst, int method,
- int maxValue, int type, int size, double delta )
-{
- CvMat* mean = 0;
- CV_FUNCNAME( "icvAdaptiveThreshold_MeanC" );
-
- __BEGIN__;
-
- int i, j, rows, cols;
- int idelta = type == CV_THRESH_BINARY ? cvCeil(delta) : cvFloor(delta);
- uchar tab[768];
-
- if( size <= 1 || (size&1) == 0 )
- CV_ERROR( CV_StsOutOfRange, "Neighborhood size must be >=3 and odd (3, 5, 7, ...)" );
-
- if( maxValue < 0 )
- {
- CV_CALL( cvSetZero( dst ));
- EXIT;
- }
-
- rows = src->rows;
- cols = src->cols;
-
- if( src->data.ptr != dst->data.ptr )
- mean = dst;
- else
- CV_CALL( mean = cvCreateMat( rows, cols, CV_8UC1 ));
-
- CV_CALL( cvSmooth( src, mean, method == CV_ADAPTIVE_THRESH_MEAN_C ?
- CV_BLUR : CV_GAUSSIAN, size, size ));
- if( maxValue > 255 )
- maxValue = 255;
-
- if( type == CV_THRESH_BINARY )
- for( i = 0; i < 768; i++ )
- tab[i] = (uchar)(i - 255 > -idelta ? maxValue : 0);
- else
- for( i = 0; i < 768; i++ )
- tab[i] = (uchar)(i - 255 <= -idelta ? maxValue : 0);
-
- for( i = 0; i < rows; i++ )
- {
- const uchar* s = src->data.ptr + i*src->step;
- const uchar* m = mean->data.ptr + i*mean->step;
- uchar* d = dst->data.ptr + i*dst->step;
-
- for( j = 0; j < cols; j++ )
- d[j] = tab[s[j] - m[j] + 255];
- }
-
- __END__;
-
- if( mean != dst )
- cvReleaseMat( &mean );
-}
-
-
-CV_IMPL void
-cvAdaptiveThreshold( const void *srcIm, void *dstIm, double maxValue,
- int method, int type, int blockSize, double param1 )
-{
- CvMat src_stub, dst_stub;
- CvMat *src = 0, *dst = 0;
-
- CV_FUNCNAME( "cvAdaptiveThreshold" );
-
- __BEGIN__;
-
- if( type != CV_THRESH_BINARY && type != CV_THRESH_BINARY_INV )
- CV_ERROR( CV_StsBadArg, "Only CV_TRESH_BINARY and CV_THRESH_BINARY_INV "
- "threshold types are acceptable" );
-
- CV_CALL( src = cvGetMat( srcIm, &src_stub ));
- CV_CALL( dst = cvGetMat( dstIm, &dst_stub ));
-
- if( !CV_ARE_CNS_EQ( src, dst ))
- CV_ERROR( CV_StsUnmatchedFormats, "" );
-
- if( CV_MAT_TYPE(dst->type) != CV_8UC1 )
- CV_ERROR( CV_StsUnsupportedFormat, "" );
-
- if( !CV_ARE_SIZES_EQ( src, dst ) )
- CV_ERROR( CV_StsUnmatchedSizes, "" );
-
- switch( method )
- {
- case CV_ADAPTIVE_THRESH_MEAN_C:
- case CV_ADAPTIVE_THRESH_GAUSSIAN_C:
- CV_CALL( icvAdaptiveThreshold_MeanC( src, dst, method, cvRound(maxValue),type,
- blockSize, param1 ));
- break;
- default:
- CV_ERROR( CV_BADCOEF_ERR, "" );
- }
-
- __END__;
-}
-
-/* End of file. */